Mine started in my first pregnancy at 24 weeks. I remember because I was sitting next to my MIL and she rolled her eyes...until she felt my rock hard uterus! They continued daily until delivery...worse with activity and full bladder. Then, this time they started at 16 weeks. I think that 13 weeks is probably totally normal : )
I never had a single BH with DD but this time they started at 11w which is like the earliest they can begin. Around 16w they died down and started up full time this past week (36w).
Re: Almost 13 weeks and feel braxton Hicks?